Hello @Erico_Teixeira, sorry you’re not able to access your exam. This is something you should not have to troubleshoot yourself, nor do you have to configure the ports.
Please reach out to your Administrator at OnVue and have them fix this for you. This would fall under that support team, not here at Wowza.
They will resolve it for you or discuss your network/wifi settings to access the exam. Thanks and good luck!